Apparatus for press casting



March 24, 1925.

C. J. HULT APPARATUS FOR PRESS CASTING Filed April 1922 s En@ m i 'To all whom 'it may concern:

Patented Mar. 24, 192.5.

UNITEDSTATES PATENT-OFFICE 1 HAN HULT, orlsrocxnomu, SWEDEN, assIGNon To AK'riEBoLAGnT svENsKA PRESSGJUTERIET, or STOCKHOLM, SWEDEN, a oonronATIoN.

- APPARATUS Fon PREss CASTING.

` g Application filed April 22, 1922. Serial No. 556,082.

Be yit known that I, CARL JOHAN HULT, manufacturer, ya subject of the King of Sweden, residingat 44 Rorstrandsgatan`` vStockholm,Sweden. have inventedA certain 'new anduseful lmprovements'in Apparatus for Pressy Casting, of which the following 1s a specification.

The present invention relates to an ar-l rangement in press feasting apparatus, and

the object/of the invention is to provide an apparatus wherein the closing ofv the mould as well as the'r retaining thereof during the casting process, and the bpeningthereof after the castingr process has been completed, may be easily effected by a: singleman. In the apparatus as heretofore known, this work generally ,requires at least two men, by reason of the device employed for the work being unmanageable and otherwise unsuitable. y l p vThe invention is principally Vcharacterized by this that the members, ,byv means of which the mould is retainedduring the casting process, are displaceable toand' fro on fixed #guides in `such a manner that the member situated adjacent `to the casting nozzle of the apparatus may be moved outywardly from the' nozzle by the `action of springs,whereas the other member is connected with a device by meansy of which it maybe displaced toand' fro on the guides.

` The accompanying drawing illustrates an embodiment of the invention. Fig. 1 shows the apparatus in elevation, the members holding the .mould beingillustrated in section, and Fig. 2'shows the apparatus in plan view. m

1 is the furnace pertaining to the apparatus, within which are disposed/the melting crucible and the parts serving to press out the molten metal. `Attached to the side of the furnace 1 a-reguidesi 2supported at their outer ends by posts 3@ On'the guides, the, plates or -frames4 and k5 are mounted so that they may be displaced, and between said plates or frames the mould, that is to say the mould` halves, g are disposed and adapted to be jammed together, while the two plates and the intermediate mould' are adapted yto be moved unto the furnace 1, so that the sleeve y6 provided inf the plate 4 will be-brought tight upr against the outlet 7 of the furnace. According toFig.` 2 the plate or frame 4 is rigidly 'connected with rods 8 which are displaceable toV and fro inguides 9 arranged in the furnace, whereas between the guides 9 and the plate 4, springs 10 are-arranged on the rods 8.

Screwed onto the outer threaded ends of the rods 8 are nuts 11, adjustable on the rods,

.and forming abut-ments co-o-perating with ypiece 12, the ends of which'are threaded on screws 13 .attached to the plate 5, said screws 13 being tube-shaped and, in turn, threaded on the guides The cross piece 12 is adjustable on the screws 13 by means of nuts 14 and 15, so thaty the cross piece may be adjusted, asr desired, to a distance from the plate 4 corresponding to the width of the mould being used for the moment. The cross piece 12 is connected by means of links 16 with toothed segments 17. Meshing with these segments are pinions 18 on shaft 19 which may be Vrotated by means of the levers 20.

In the position of the parts according to the drawing, the` mould is assumed to be jammed. between the plates or frames 4, 5, while plate 4 is pressed unto the outlet 7 of the furnace so that Vthe metal can be pressed into the mould. When, on the cast` ing process having been completed, the mould is to be removed yfrom the furnace and taken apart, shaft 19 is turned to the the segments 17 so that the latter will draw nthe, plate 5 outwardly on the guides 2 by means of the links 16; Then the mould and also the plater4 will follow by being displaced outwards through the action of the springs 10. This displacement continues until the nuts 11 abut'against the guides 9, when the plate 4 is caused to stop. The outwards-movement of the plate 5 is con tinued, said plate being thus moved from the plate 4, so that the mould halves are separated and the casting may be removed. By again turning the shaft 19 to the right, the parts are actuated in the reversed sequence, so that the plates 4 and 5 are again brought closer together yso as tol jam the mould between them, whereupon the plates are again moved toward the furnace, to-

of the plate is pressed against the nozzle 7. To regulate the extent of movement between the pinions 17 and the links 16, there are provided set screws 2l in the former ones, adapted to be screwed against the link rods 16. n v

Vliat I claim as new and desire t0 secure by Letters Patent of the United States is l. In a die-casting;` apparatus, fixed guides, mould holding members reciprocably mounted on said guides, a casting` nozzle arranged adjacent one or' the holdingsr members, rods Carried by the last mentioned holding membei, guides ior said rods, springs arranged between the second mentioned guides and said mould holding member normally tending to move the latter away from the casting nozzle, means 'for linut-ing the displacement of said rods and the holding member car- 1 ried thereby,y and means for reciprocating the other holding member along the first mentioned guides.

A diecastmg apparatus as claimed in claim l characterized in that the said recip- Merise roeating means for said other holding member includes a cross rod connected with the second mentioned holdin g member, rotatable pinions, toothed segments meshing With said pinions, and .links connecting the toothed segments with the cross piece whereby upon rotation of the pinion the toothed segments are actuated and the holding member is moved outwardly.

A die-casting apparatus as claimed in claim l characterized in that the reciprocating means tor the second mentioned holding member includes a cross piece, means tor reciprocating said eros-s piece, screws carried by the holding member and adjustable in the cross piece whereby the extent of movement oil? the holding` member may be varied according to the size of the mould.

ln testin'ionjt7 whereof I aii'ix my signature presence of two Witnesses.

, CARL JGHAN HULTT Witnesses L. BERG vonT Citrine, Euro HOLGER. 

